interface ShowMessage {
  void 显示商标(String s);
}
class TV implements ShowMessage {
  public void 显示商标(String s){
    System.out.println(s);
  }
}
class PC implements ShowMessage {
  public void 显示商标(String s){
    System.out.println(s);
  }
}
public class Example6_2 {
  public static void main (String args[]){
    ShowMessage sm;
    sm=new TV();
    sm.显示商标("长城牌电视机");
    sm=new PC();
    sm.显示商标("联想奔月5008PC机");
  }
}
